Glass Test Tubes Manufacturers

Industry Knowledge

Choosing Between Glass and Plastic Test Tubes: Heat Resistance and Chemical Compatibility — Insights from Suzhou Texnet

Glass test tubes and plastic test tubes are both essential tools in laboratories worldwide, each offering unique advantages depending on the application. Understanding their differences in heat resistance and chemical compatibility is crucial for selecting the right product.

Suzhou Texnet, founded in 2002 and located in Suzhou Industrial Park near Shanghai, is a trusted supplier specializing in high-quality medical disposable products, including test tubes. Holding CE and ISO 13485 certifications from TUV and registered with the FDA, Suzhou Texnet serves hospitals, pharmacies, and nursing homes across multiple continents. Our commitment to quality and customer service ensures reliable products that meet rigorous standards.

When it comes to heat resistance, glass test tubes, often made from borosilicate glass, excel due to their low thermal expansion. They withstand temperatures up to around 500°C, making them ideal for heating, boiling, or flame exposure. This capability supports various demanding laboratory processes such as chemical synthesis and sterilization. In contrast, plastic test tubes, typically made from polypropylene or polystyrene, offer lower heat tolerance—usually up to 120°C for polypropylene and even less for other plastics—making them unsuitable for direct flame or high-temperature applications.

Chemical compatibility further distinguishes these materials. Glass test tubes are highly inert and resist most acids, bases, and solvents, which makes them versatile for many chemical environments. However, certain chemicals like hydrofluoric acid require special caution. Plastic test tubes vary: polypropylene provides decent resistance to acids and bases but can degrade in some organic solvents, while polystyrene has limited chemical resistance and can leach additives that may interfere with sensitive tests.

At Suzhou Texnet, we understand the importance of these differences when sourcing medical disposables. With over three decades of growth from a startup to a global supplier, we offer a comprehensive range of products that simplify procurement and ensure consistent quality through our dedicated QC team. We proudly support customers worldwide, maintaining a strong focus on meeting diverse needs with reliable, certified products.

Glass test tubes are preferred when high heat and broad chemical resistance are required, while plastic test tubes offer cost-effective and safer handling for less demanding conditions. Partnering with experienced suppliers like Suzhou Texnet ensures access to quality products that suit your laboratory’s specific needs.